GMA GX3 ExtremeBlast Garnet Abrasive


GMA ExtremeBlast is our coarsest grade for the toughest jobs.

Coating Thickness: 50-100ml
Profile: 3.5-5.0 ml


  • High surface profile of 3.5 – 4.5 mil (90 – 115 µm) or greater with exceptionally clean surface, enabling good bonding of specialist coatings
  • Blasting rates: Up to 280 ft²/hr (26 m²/hr)
  • Consumption rate: 2.5 – 3.5 lb/ft² (12.20 – 17.09 kg/m²)
  • Dust factor:  Low/Medium
  • Recyclability:  4/10
  • Mesh sizes: 16, 36
  • Packaging: 4400lb bulk bag



ExtremeBlast is GMA Garnet’s range of engineered abrasive blasting media. This abrasive is a blend of alluvial and rock garnets. Ideal for TSA preparation, coatings for extreme conditions, preparing critical components. Removal of high build coatings, pliable and flexible coatings including coal tar, inner liners and some marine coatings. Suitable for offshore platform decking, tanks, piping, pressure vessels, ship hulls and ballast tanks.

A greater profile range can be achieved with exceptionally clean surface, enabling remarkable bonding of specialist coatings.

GX3 is one of the coarser grades, ideal for removing the thickest coatings. Specifically, coatings of 30+ mils thickness. It also has the ability to remove flexible or rubberized coatings. It has this ability to do this is because of the sharpness of the rock garnet.

GMA Garnet is available from BlastOne throughout the USA. BlastOne’s stock-holdings includes multiple different grades to suit every blasting challenge. GMA’s ISO Quality Management System ensures consistency, both in size and cleanliness.

Additional information

Weight N/A
Dimensions N/A
Skid Size

2200lb bulk bag, 4400lb bulk bag, 55lb bag on 2200lb skid, 55lb bag on 4400lb skid, Bulk Tanker

Document Downloads

SDS GMA ExtremeBlast GX3

PDS GMA ExtremeBlast GX3